Номер 1153 все примеры срочно

9/10 * 2/3 = (9*2)/(10*3) = 3/5 3/16 * 4/9 = (3*4)/16*9) = 1/12 3/5 * 5/12 = ( 3*5)/(5*12) = 1/4 3/4 * 8/15 = (3*8)/(4*15) = 2/5 4/5 * 3/8 = (4*3)/(5*8) = 3/10 5/7 * 14/25 = (5*14)/(7*25) = 2/5